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Date:      Wed, 27 Sep 2000 14:19:00 +0100
From:      Antony T Curtis <antony@abacus.co.uk>
To:        Jeroen Ruigrok van der Werven <jruigrok@via-net-works.nl>
Cc:        Nick Sayer <nsayer@quack.kfu.com>, freebsd-stable@FreeBSD.ORG
Subject:   Re: UP kernel on SMP machine?
Message-ID:  <39D1F3C4.33625F65@abacus.co.uk>
References:  <39D18AF8.D2FE4073@quack.kfu.com> <20000927140005.I10657@lucifer.bart.nl>

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Jeroen Ruigrok van der Werven wrote:
> 
> -On [20000927 07:55], Nick Sayer (nsayer@quack.kfu.com) wrote:
> >Does anyone think that setting up a non-SMP kernel on an SMP motherboard
> >(but with only one processor installed) might have anything to do with
> >this?
> 
> UP kernels should work on a SMP box.  And a few others agree with me on
> this.
> 
> Unfortunately I don't have a 4-STABLE SMP box to test this on.
> 
> Have you tried enabling DDB and trying to break to DDB when it is just
> blank?
> 
> Did you actually see FreeBSD reporting:
> 
> buffers flushed
> rebooting
> 
> or something to that nature and the system attempting to reboot?

I have never experienced any problems with running UP OS's on a SMP mobo
with either one or 2 CPU's installed.

This is both with Pentium 200 CPUs on a Tyan Tomcat mobo... and Intel
Celeron 400A on a Tyan 440BX mobo.

-- 
ANTONY T CURTIS                     Tel: +44 (1635) 36222
Abacus Polar Holdings Ltd           Fax: +44 (1635) 38670
> You can't judge a book by the way it wears its hair.


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